Method of closing and sealing tin cans and like containers



y 1934- A. l. BAGGOTT METHOD OF CLOSING AND SEALING TIN CANS AND LIKE CONTAINERS Filed Oct. 1. 1932 Patented May 29, 1934 UlED STATES METHOD OF CLOSING AND SEALING TIN CANS AND LIKE CONTAINERS Archibald Ingram Baggott, Santa Elena, Argentina Application October 1,

3 Claims.

This invention relates to an improved method of closing and sealing containers and more particularly tin cans, drums or similar containers which are capped or closed, exhausted of air, steam or other gases and are then sealed.

The invention in accordance with this specification is intended to be used more especially in connection with tin cans for containing preserved ioodstufis. The closing of such cans is normally effected by soldering and a small hole in the cap or lid leaves the interior of the can open for the exhausting process, after which the vent hole in the cap is sealed by soldering. It is found that the solder and the flux used are liable to fall into the can and on to the preserved product.

The object of this invention is to provide means which will prevent the solder or flux from falling into the can during the closing or capping operation.

A further object of the invention is to provide a cap to cooperate with a specially constructed lid or side, top or bottom surface of the can or container, which will obviate the possibility of solder and/or fiux being introduced into the can when the vent hole is sealed.

It is a further object of the invention to provide a single disc-like cap easily applied to close the opening in the can through which the product to be preserved is introduced into the can.

The cap and sealing device in accordance with the invention consist of a single disc-like part applied to the container and adapted to cooperate with two or more annular grooves or a suitable corrugation formed on the lid or side, top or bottom surface of the container, the small vent or exhaust hole (or holes) being provided near the edge of the single cap in a position above an inner annular groove or corrugation on the surface of the main part of the container.

The invention will be described with reference to the accompanying drawing, in which:--

Fig. l is a section of the lid or side, top or bottom of a container in accordance with the invention. 1 45 Fig. 2 is a plan view or" same.

Fig. 3 is a section of a cap or disc according to the invention.

Fig. 4 is a plan view of same.

Fig. 5 shows a view of the cap in position on the lid or side, top or bottom of the container.

Fig. 6 shows a plan view of same.

With reference to the drawing, the lid or side, top or bottom surface of the container, shown in Figs. 1 and 2, is constructed in accordance with the invention, with two annular V shaped grooves 1932, Serial No. 635,796

A and B surrounding the central opening C through which the product to be preserved is introduced into the container. The inner rim D is turned upwards.

The cap or disc-like part shown in Figs. 3 and i has a broad peripheral raised portion E. leaving a circular lower portion H in the centre of the cap. The outer rim F of the cap is turned downwards and outwards. The small vent hole G is provided in the raised portion E of the cap.

When placed in position on the specially constructed lid or other surface of the container, the outer rim F of the cap drops into the outer annular groove A and the circular lower portion 1-]: of the cap rests within the upturned rim D of the opening 0 in the container.

The vent hole G in the cap is located immediately above the inner groove B in the lid.

The can or container is closed by soldering the cap into the outer groove A and when the container has been exhausted through the vent hole G, the latter is sealed by soldering. It will be seen that the solder or flux used for closing the can is impeded from overflowing into the container by the grooves in the container. Any solder or flux used for sealing the vent hole will be caught by the inner groove B on the lid, or other surface of the container, and will be prevented from falling into the container.

Instead of the two definite grooves shown in the drawing, additional grooves may be provided or a suitable corrugation can be formed round the opening in the container.

I claim:

1. The combination of a container having an opening through which it may be filled, a pair of grooves in the container surrounding the opening, and a cap adapted to close said opening and having a depending edge to extend within the outer groove and be sealed therein, said cap having a hole which lies over the inner groove when the cap is sealed in place to provide an escape passage from the interior of the can, said inner groove receiving and retaining sealing matter falling through the hole when said hole is being closed, to prevent it from contaminating the contents of the can.

2. A can or like container for packing preserved products comprising in combination two concentric annular V-shaped grooves formed round a hole in the lid or bottom or portion cut away in one of the sides of the container and a single disc-like cap having a turned down edge adapted to fit into the outer annular groove, a raised peripheral rim adapted to lie over the top iio a cap having a depending edge to extend within said groove and be sealed therein, said cap having a hole which lies over the annular portion of the container between said groove and said flanged margin when the cap is sealed in place to provide an escape passage from the interior of the can, said flanged margin shielding the contents of the can from sealing matter falling through the hole when the hole is being closed.

ARCHIBALD INGRAM BAGGOTT. 

